chore(docs): use source instead of . for sourcing files

This makes it easier to read.

.github/workflows/macos.yml

@@ -1,4 +1,4 @@
-# Copyright © Michal Čihař <michal@weblate.org>
+# Copyrightct © Michal Čihař <michal@weblate.org>
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
@@ -35,5 +35,5 @@ jobs:
     - name: Install Weblate
       run: |
         uv venv --python python3.12 .venv
-        . .venv/bin/activate
+        source .venv/bin/activate
         uv pip install -e .[all,test]

dev-docker/weblate-dev/Dockerfile

@@ -53,6 +53,6 @@ RUN apt-get update && apt-get install -y \
 RUN apt-get install -y gir1.2-rsvg-2.0
 
 COPY requirements.txt /tmp/
-RUN . /app/venv/bin/activate && uv pip install -r /tmp/requirements.txt
+RUN source /app/venv/bin/activate && uv pip install -r /tmp/requirements.txt
 # List should match weblate/weblate
 RUN chown -R "${USER_ID}:${GROUP_ID}" /etc/nginx/sites-available/ /var/log/nginx/ /var/lib/nginx /app/data /app/cache /run /home/weblate /etc/localtime /etc/supervisor/conf.d /tmp/localtime

docs/contributing/start.rst

@@ -31,8 +31,8 @@ sources.
 
    .. code-block:: sh
 
-      virtualenv .venv
-      . .venv/bin/activate
+      uv venv .venv
+      source .venv/bin/activate
 
 3. Install Weblate (for this you need some system dependencies, see :doc:`../admin/install/source`) and all dependencies useful for development: